Didn't want to read any responses B4 reply so my Knee Jerk is: Asking today I'm assuming it's the 3rd, ask me tomorrow (Mon) I'd assume the 10th. I realize the weeks technically start on Sunday per a wall calendar but Sunday just fits better at the end of a week ... after all it's considered part of the 'weekend'.
My real answer would be both anyway - I'd play the 3rd and the 10th, weather permitting.
My real answer would be both anyway - I'd play the 3rd and the 10th, weather permitting.